Where are KeyValueStorage files kept?

I'm currently developing mostly in the editor and I'd like to know where are these values stored. I'd like to know because I got kind of tired of searching for all the keys I've used and to delete them manually. This would save me a lot of time.

In which folder are they saved and what are their names?

Currently don't need them but it'd be useful to know the directory where they are saved on android as well.

P.S. If it's not already obvious, I'm using KeyValueStorage instead of PlayerPrefs.